cherry-pick: make sure all input objects are commits

When a single argument was a non-commit, the error message used to be:

	fatal: BUG: expected exactly one commit from walk

For multiple arguments, when none of the arguments was a commit, the error was:

	fatal: empty commit set passed

Finally, when some of the arguments were non-commits, we ignored those
arguments.  Fix this bug and make sure all arguments are commits, and
for the first non-commit, error out with:

	fatal: <name>: Can't cherry-pick a <type>

Signed-off-by: Miklos Vajna <vmiklos@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sequencer.c b/sequencer.c
index baa031052e4e3f77bb6d4a257a5669ca5a5d617e..61fdb6805cd85b803f2675bef0619b04bd767314 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -1047,6 +1047,7 @@ int sequencer_pick_revisions(struct replay_opts *opts)
 {
        struct commit_list *todo_list = NULL;
        unsigned char sha1[20];
+       int i;
 
        if (opts->subcommand == REPLAY_NONE)
                assert(opts->revs);
@@ -1067,6 +1068,23 @@ int sequencer_pick_revisions(struct replay_opts *opts)
        if (opts->subcommand == REPLAY_CONTINUE)
                return sequencer_continue(opts);
 
+       for (i = 0; i < opts->revs->pending.nr; i++) {
+               unsigned char sha1[20];
+               const char *name = opts->revs->pending.objects[i].name;
+
+               /* This happens when using --stdin. */
+               if (!strlen(name))
+                       continue;
+
+               if (!get_sha1(name, sha1)) {
+                       enum object_type type = sha1_object_info(sha1, NULL);
+
+                       if (type > 0 && type != OBJ_COMMIT)
+                               die(_("%s: can't cherry-pick a %s"), name, typename(type));
+               } else
+                       die(_("%s: bad revision"), name);
+       }
+
        /*
         * If we were called as "git cherry-pick <commit>", just
         * cherry-pick/revert it, set CHERRY_PICK_HEAD /

diff --git a/t/t3508-cherry-pick-many-commits.sh b/t/t3508-cherry-pick-many-commits.sh
index 4e7136b83775946a07678119c7c9897bb0f2b709..19c99d7ef1bc02e67a7b995206b9f66c04c1b31c 100755 (executable)
--- a/t/t3508-cherry-pick-many-commits.sh
+++ b/t/t3508-cherry-pick-many-commits.sh
@@ -55,6 +55,12 @@ one
 two"
 '
 
+test_expect_success 'cherry-pick three one two: fails' '
+       git checkout -f master &&
+       git reset --hard first &&
+       test_must_fail git cherry-pick three one two:
+'
+
 test_expect_success 'output to keep user entertained during multi-pick' '
        cat <<-\EOF >expected &&
        [master OBJID] second